Nessie is of Scottish origin, deriving from the Gaelic word 'Nessan', which means 'water'. This unique name has gained worldwide recognition due to its association with the legendary Loch Ness Monster, often referred to as 'Nessie'. The name first appeared in Scottish records during the 18th century but became popularized globally following sightings of the creature in Loch Ness, Scotland, starting in the 1930s. Today, Nessie is an uncommon yet distinctive given name, often chosen for its historical and cultural significance.
"This name appears to have experienced brief periods of popularity around the early 1900s, with peaks in 1915 and 1918, but has since become quite rare."